I really need help proving this. However i do not know how to deal with the nCr and factorials at all. I have never had factorials/nCr so i don't know what to do.

~RikT

January 12th 2010, 02:52 PM

Plato

Why do you use such words as “thingy” on a serious site such as this?

Quote:

Originally Posted by RIkT

((n nCr k)(n-k))/(K+1) = (n nCr k+1)

That string of symbols is totally meaningless.

Quote:

Originally Posted by RIkT

I have never had factorials/nCr so i don't know what to do.

If that is true then I understand why you do not know how to use the symbols.
If that is true then why are you asked to do this question?
If that is true then you will not understand any help we might give you.